[英]How to make round corners for a ring shape in Android drawable
我有一個自定義進度條,如下所示:
這是我用來創建它的 .xml 代碼:
background_drawable.xml
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:innerRadius="@dimen/progress_bar_radial_inner_radius"
android:thickness="@dimen/progress_bar_radial_thickness"
android:shape="ring"
android:useLevel="false" >
<solid android:color="@color/main_color_alpha"/>
</shape>
progress_drawable.xml
<?xml version="1.0" encoding="UTF-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="270"
android:toDegrees="270">
<shape
android:innerRadius="@dimen/progress_bar_radial_inner_radius"
android:thickness="@dimen/progress_bar_radial_thickness"
android:shape="ring" >
<solid android:color="@color/main_color"/>
</shape>
</rotate>
我想要的是我用來顯示進度的戒指的圓角。 看起來像這樣的東西:
有人對如何實現這一目標有任何想法嗎?
好吧,我發現做我想做的最簡單的方法是在畫布上繪制進度弧,而不是使用progress_drawable.xml。 這是我的代碼,以防有人有類似的問題。
class RadialProgressBar : ProgressBar {
private val thickness = 28f
private val halfThickness = thickness / 2
private val startAngle = 270f
private var boundsF: RectF? = null
private lateinit var paint: Paint
constructor(context: Context?) : super(context) {
init()
}
constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs) {
init()
}
constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
init()
}
private fun init() {
paint = Paint()
paint.isAntiAlias = true
paint.style = Paint.Style.STROKE
paint.strokeWidth = thickness
paint.strokeCap = Paint.Cap.ROUND
paint.color = ContextCompat.getColor(context, R.color.main_color)
progressDrawable = null
}
override fun draw(canvas: Canvas?) {
super.draw(canvas)
if (boundsF == null) {
boundsF = RectF(background.bounds)
boundsF?.inset(halfThickness, halfThickness)
}
canvas?.drawArc(boundsF, startAngle, progress * 3.60f, false, paint)
}
}
好吧,我之前搜索了很多。
我發現的唯一的解決辦法是在GitHub上檢查庫在這里
你需要使用android:radius
標簽。
例如:
<corners android:radius="10dp"/>
仔細閱讀此代碼希望這對您有所幫助
>ProgressBarActivity.java
public class ProgressBarActivity extends AppCompatActivity {
private TextView txtProgress;
private ProgressBar progressBar;
private int pStatus = 0;
private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_progress);
txtProgress = (TextView) findViewById(R.id.txtProgress);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
new Thread(new Runnable() {
@Override
public void run() {
while (pStatus <= 100) {
handler.post(new Runnable() {
@Override
public void run() {
progressBar.setProgress(pStatus);
txtProgress.setText(pStatus + " %");
}
});
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
pStatus++;
}
}
}).start();
}
}
> activity_progress.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.placio.android.custom_progressbar_circular.MainActivity" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_centerInParent="true"
android:layout_height="wrap_content">
<ProgressBar
android:id="@+id/progressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_centerInParent="true"
android:indeterminate="false"
android:max="100"
android:progress="0"
android:progressDrawable="@drawable/progress_drawable"
android:secondaryProgress="0" />
<TextView
android:id="@+id/txtProgress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/progressBar"
android:layout_centerInParent="true"
android:textAppearance="?android:attr/textAppearanceSmall" />
</RelativeLayout>
</RelativeLayout>
> progress_drawable.xml
<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="-90"
android:pivotX="50%"
android:pivotY="50%"
android:toDegrees="270" >
我能夠使用圖層列表實現這一點,並在線的每一側添加一個點。 第一個將被卡在頂部,而第二個將跟隨進度,因為在旋轉元素內添加了插入。 您必須根據進度條布局的大小進行調整。 我的是250dp x 250dp。
progress_drawable.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<rotate android:fromDegrees="270" android:toDegrees="270">
<shape
android:innerRadiusRatio="2.55"
android:shape="ring"
android:thickness="15dp"
android:useLevel="true">
<solid android:color="@color/main_color" />
</shape>
</rotate>
</item>
<item android:bottom="211dp">
<shape
android:innerRadiusRatio="1000"
android:shape="ring"
android:thickness="7dp"
android:useLevel="false">
<solid android:color="@color/main_color" />
</shape>
</item>
<item>
<rotate>
<inset android:insetBottom="211dp">
<shape
android:innerRadiusRatio="1000"
android:shape="ring"
android:thickness="7dp"
android:useLevel="false">
<solid android:color="@color/main_color" />
</shape>
</inset>
</rotate>
</item>
</layer-list>
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